The global appetite for mobile applications will explode over the next two years, new research suggests. study done for Getjar, the world's second biggest app store, said the market will grow to $17.5bn (£12bn) in the next two years.

The study claimed downloads would climb from 7bn last year to 50bn by 2012 - a 92% year-on-year increase.

It found there had been a gold rush with the number of app stores rising from four before 2008 to 48 today.